Multi-domain horizontal alignment liquid crystal display panel

Abstract

A multi-domain horizontal alignment (MHA) liquid crystal display (LCD) panel is provided. The MHA LCD includes an active device array substrate, an opposing substrate and a liquid crystal layer. The opposing substrate has a common electrode layer. The active device array substrate includes a substrate, scan lines, data lines and pixel units. The scan lines and the data lines are disposed on the substrate and define L-shaped pixel areas thereon. The pixel units are disposed on the respective L-shaped pixel areas. Each pixel unit has an active device, a pixel electrode, and first and second alignment members. The pixel electrode and the active device are electrically connected. The first and the second alignment members are arranged perpendicular to each other on the pixel electrode, wherein the first alignment members are set at a 45 degree angle with respect to the horizontal direction.

What is claimed is: 
     
         1 . A multi-domain horizontal alignment liquid crystal display (MHA LCD) panel, comprising:
 an active device array substrate, having:   a substrate;   a plurality of scan lines disposed on the substrate;
 a plurality of data lines disposed on the substrate, wherein the scan lines and the data lines together define a plurality of L-shaped pixel areas on the substrate; 
 a plurality of pixel units disposed on the respective L-shaped pixel areas such that the pixel unit is controlled through the scan line and the data line, wherein each pixel unit further comprises:
 an active device electrically connected to the corresponding scan line and the corresponding data line; 
 a pixel electrode electrically connected to the active device; 
 a plurality of first alignment members disposed on the pixel electrode such that the first alignment members form a 45 degree included angle with the horizontal direction; 
 a plurality of second alignment members disposed on the pixel electrode such that the first alignment members are set in a direction perpendicular to the second alignment members; 
 an opposing substrate having a common electrode layer; and 
 
   a liquid crystal layer disposed between the active device array substrate and the opposing substrate.   
     
     
         2 . The MHA LCD panel of  claim 1 , wherein the panel also comprises:
 a first polarizing plate disposed on the surface of the opposing substrate far away from the liquid crystal layer; and   a second polarizing plate disposed on the surface of the active device array substrate far away from the liquid crystal layer, wherein the direction of polarization of the first polarizing plate is either at a 0 or a 90 degree angle with respect to the horizontal direction, and the direction of polarization of the second polarizing plate is also at a 0 or a 90 degree angle with respect to the horizontal direction but complementary to that of the first polarizing plate.   
     
     
         3 . The MHA LCD panel of  claim 1 , wherein the active device array substrate further includes a plurality of common lines disposed on the substrate. 
     
     
         4 . The MHA LCD panel of  claim 3 , wherein each common line has a plurality of T-shaped branches. 
     
     
         5 . The MHA LCD panel of  claim 1 , wherein the total length of the first alignment members in each pixel unit is the same as the total length of the second alignment members. 
     
     
         6 . The MHA LCD panel of  claim 1 , wherein each scan line has a jagged shape. 
     
     
         7 . The MHA LCD panel of  claim 1 , wherein each data line has a jagged shape. 
     
     
         8 . The MHA LCD panel of  claim 1 , wherein the first alignment members include alignment protrusions or slits. 
     
     
         9 . The MHA LCD panel of  claim 1 , wherein the second alignment members include alignment protrusions or slits.